A pattern recognition framework for detecting dynamic changes on cyclic time series

作者：Gharehbaghi Arash^*; Ask Per; Babic Ankica

来源：Pattern Recognition, 2015, 48(3): 696-708.

DOI：10.1016/j.patcog.2014.08.017

• Hybrid model
• Cyclic time series
• Time series
• Phonocardiogram
• Systolic murmurs

This paper proposes a framework for binary classification of the time series with cyclic characteristics. The framework presents an iterative algorithm for learning the cyclic characteristics by introducing the discriminative frequency bands (DFBs) using the discriminant analysis along with k-means clustering method. The DEBs are employed by a hybrid model for learning dynamic characteristics of the time series within the cycles, using statistical and structural machine learning techniques. The framework offers a systematic procedure for finding the optimal design parameters associated with the hybrid model. The proposed model is optimized to detect the changes of the heart sound recordings (HSRs) related to aortic stenosis. Experimental results show that the proposed framework provides efficient tools for the classification of the HSRs based on the heart murmurs. It is also evidenced that the hybrid model, proposed by the framework, substantially improves the classification performance when it comes to detection of the heart disease.

• 出版日期2015-3